Floor Vacuum Cleaner

ABSTRACT

The invention relates to a floor vacuum cleaner comprising a dust collector arrangement mounted on rollers and/or runners, a suction hose, a suction tube and a floor nozzle, wherein the floor nozzle is fluidically connected to the dust collector arrangement via the suction tube and the suction hose, also comprising a motorized fan unit for suctioning an air stream through the floor nozzle, wherein the motorized fan unit is arranged between the floor nozzle and the suction tube such that an air stream suctioned in through the floor nozzle flows through the motorized fan unit and into the suction tube.

The invention relates to a floor vacuum cleaner.

Vacuum cleaners are available in a variety of different configurationsor designs. The best-known designs include the upright vacuum cleaner,the hand-held vacuum cleaner, and the floor vacuum cleaner.

An upright vacuum cleaner comprises a movable base unit above which anupper body with a vacuum cleaner container is arranged, where the twoparts are mounted so as to be pivotable relative to each other. Anelectrically driven brush is typically provided in the base unit. Anupright vacuum cleaner is shown, for example, in EP 2 030 551. Suchvacuum cleaners are sometimes referred to as brush/beater vacuumcleaners.

The hand-held vacuum cleaner comprises a housing with a motor-driven fanand a dust collection chamber. A suction tube on one side is led outfrom the housing, at the end of which a floor nozzle is disposed.Disposed on the other side of the housing is a handle, optionally on arod.

Floor vacuum cleaners comprise a housing which is mounted on rollersand/or runners. A dust collection container is arranged in the housingand contains a filter bag. A floor nozzle is via a suction tube and asuction hose connected to the dust collection chamber. In conventionalfloor vacuum cleaners, a motorized fan unit is further arranged in thehousing and creates a negative pressure in the dust collectioncontainer. In the air flow direction, the motorized fan unit istherefore arranged downstream of the floor nozzle, the suction tube, thesuction hose, and the dust collection container or the filter bag,respectively. Since cleaned air passes though such motorized fan units,they are sometimes referred to as clean air motors.

Particularly in former times, there were also vacuum cleaners in whichthe suctioned dirty air was passed directly through the motor fan andinto a dust bag directly attached downstream. Examples thereof are shownin U.S. Pat Nos. 2,101,390, U.S. 2,036,056 and U.S. 2,482,337. Theseforms of vacuum cleaners are nowadays no longer very common.

Such dirty air or fouled air motor fans are also referred to as a “dirtyair motor” or “direct air motor”. The use of such dirty air motors isalso described in documents GB 554 177, U.S. Pat. Nos. 4,644,606, US4,519,112, US 2002/0159897, US 5,573,369, US 2003/0202890 or US6,171,054.

Against this background, the object underlying the invention is toprovide an improved floor vacuum cleaner.

This object is satisfied with the subject matter of claim 1. A floorvacuum cleaner is according to the invention provided comprising a dustcollector arrangement mounted on rollers and/or runners, a suction hose,a suction tube and a floor nozzle, wherein the floor nozzle isfluidically connected to the dust collector arrangement via the suctiontube and the suction hose, also comprising a motorized fan unit forsuctioning an air stream through the floor nozzle, wherein the motorizedfan unit is arranged between the floor nozzle and the suction tube suchthat an air stream suctioned in through the floor nozzle flows throughthe motorized fan unit and into the suction tube.

A dirty air motor or direct air motor is thereby advantageously used ina floor vacuum cleaner. Even with low motor power, a high volumetricflow can be obtained with the floor vacuum cleaner according to theinvention. A dirty air motor, for example, has a maximum rotationalspeed of less than 30,000 rpm and an electrical input power of less than900 W.

In the direction of air stream, the floor nozzle, sometimes referred toas a “suction nozzle”, is arranged upstream of the suction tube, thesuction tube is arranged upstream of the suction hose, and the suctionhose is arranged upstream of the dust collector arrangement. The airstream sucked in by way of the motorized fan unit through the floornozzle is first passed into the suction tube, followed by the suctionhose, and subsequently into the dust collector unit. Due to the fluidicconnection, a continuous air stream is ensured through the floor nozzle,the suction tube, the suction hose into the dust collector arrangement.

It has surprisingly been found that dirty air motors can also beadvantageously used in floor vacuum cleaners, in particular in order toconvey dirty air suctioned through the floor nozzle into the suctiontube.

In contrast to conventional floor vacuum cleaners where negativepressure is present in the suction tube, the suction hose, and the dustcollector arrangement or the dust collection chamber during operation,overpressure is in the floor vacuum cleaner according to the inventionpresent in the suction tube, the suction hose, and in the dustcollection chamber. In this way, the wall thicknesses of these elementscan be reduced or reinforcing elements (such as, for example,reinforcing ribs) can be used to a lesser extent or even completelyavoided.

The motorized fan unit can be configured in such a way that, with anaperture of 8, it has a volumetric flow of more than 30 l/s, inparticular of more than 40 l/s, and in particular of more than 50 l/s,at an electrical input power of less than 900 W according to DIN EN60312-1. The motorized fan unit can alternatively or additionally beconfigured in such a way that, with an aperture of 8, it has avolumetric flow of more than 25 Its, in particular of more than 30 Its,and in particular of more than 40 l/s, at an electrical input power ofless than 600 W according to DIN EN 60312-1. The motorized fan unit canalternatively or additionally be configured in such a way that, with anaperture of 8, it has a volumetric flow of more than 15 Its, inparticular of more than 25 1/s, and in particular of more than 30 1/s,at an electrical input power of less than 300 W according to DIN EN60312-1.

In this way, a particularly efficient floor vacuum cleaner is obtained.

The air data of a vacuum cleaner or a motorized fan unit is determinedaccording to DIN EN 60312-1: 2014-01. In particular section 5.8 is madereference to. Measuring device B according to section 7.3.7.3 is thereused. If a motorized fan unit without a vacuum cleaner housing ismeasured, then measuring device B is likewise used. For possiblynecessary adapters for connecting to the measuring chamber, thedescriptions in section 7.3.7.1 apply.

The terms “volumetric flow” and “suction air flow” are also used for theterm “air stream” according to DIN EN 60312-1.

The floor nozzle can have a base plate with a base surface which duringoperation of the floor vacuum cleaner faces the surface to be suctioned,where the base plate has at least one air flow channel parallel to thebase surface with an opening provided laterally in the base plate. Inparticular, the base plate with its base surface can during operation ofthe floor vacuum cleaner rest on the surface to be suctioned or, forexample, be spaced thereform by way of a bristle strip.

The bottom plate is also referred to as a nozzle sole. The floor nozzlecomprises a suction opening for producing a fluidic connection with themotorized fan unit. This suction opening is in fluidic connection withthe at least one air flow channel. With the at least one, in particular,one or more air flow channels, the contact pressure of the floor nozzleis advantageously adjusted for good suction power. The openings beingprovided laterally in the base plate are provided transverse to theintended sliding direction of the floor nozzle. One or more air flowchannels can be provided from one side of the base plate to the oppositeside of the base plate (in each case transverse to the slidingdirection). In such end-to-end air flow channels, one opening isprovided for each channel on either (opposite) side of the base plate.

The suction tube can have a diameter in a range from 25 mm to 50 mm, inparticular from 30 mm to 45 mm, and in particular from 35 mm to 45 mm,and/or a length in a range from 600 mm to 1200 mm. The suction tube canbe formed to be rigid, in particular such that it can by a user not bedeformed during the intended use. The suction tube can be partially orcompletely made of plastic material or metal.

The suction hose can have a diameter in a range from 25 mm to 50 mm, inparticular from 30 mm to 45 mm, and in particular from 35 mm to 45 mm,and/or a length in a range from 1000 mm to 2500 mm. The suction hose canbe configured to be flexible, in particular such that it can be deformedby a user when used as intended. The suction hose can be partially orcompletely made of plastic material. It can in particular comprise aplastic wall and/or reinforcement made of metal (for example a spiralwire).

The suction tube and/or the suction hose can have a constant or avariable diameter over their respective lengths. The suction tube and/orthe suction hose can in particular have a tapering shape, where thediameter is preferably reduced towards the floor nozzle. Theabove-mentioned diameters refer in particular to the smallest diameterof the suction tube or of the suction hose, respectively.

The floor nozzle can be configured and/or the motorized fan unit can bearranged such that no contact between the fan wheel of the test probeaccording to IEC/EN 60335 is possible through the floor nozzle.Reference is there made to section 8 of the version DIN EN 60335-1:2012-10. In particular, test probe B is to be used.

This reduces the risk of damaging the motorized fan unit and the risk ofinjury when touching the floor nozzle while the motor is running.

The floor vacuum cleaner can be a bag vacuum cleaner, in particularhaving a filter area of at least 800 cm², in particular of at least1500cm² and in particular of at least 2500 cm². A bag vacuum cleaner isa vacuum cleaner in which the suctioned dust is separated and collectedin a vacuum cleaner filter bag. The floor vacuum cleaner can inparticular be a bag vacuum cleaner for disposable bags.

The filter area of a vacuum cleaner filter bag designates the entirearea of the filter material which is located between or within the edgeseams (for example welding or adhesive seams). Any side or surface foldsthat may be present also need to be considered. The area of the bagfilling opening or inlet opening (including a seam surrounding thisopening) is not part of the filter area.

The vacuum cleaner filter bag can be a flat bag or have a block bottomshape. A flat bag is formed by two side walls made of filter materialwhich are joined together (for example welded or glued) along theirperipheral edges. The bag filling opening or inlet opening can beprovided in one of the two side walls. The side faces or walls can eachhave a rectangular basic shape. Each side wall can comprise one or morelayers of nonwoven and/or nonwoven fabric.

The floor vacuum cleaner in the form of a bag vacuum cleaner cancomprise a vacuum cleaner filter bag, where the vacuum cleaner filterbag is designed in the form of a flat bag and/or a disposable bag.

The bag wall of the vacuum cleaner filter bag can comprise one or morelayers of a nonwoven and/or one or more layers of nonwoven fabric. Itcan in particular comprise a laminate of one or more layers of nonwovenand/or one or more layers of nonwoven fabric. Such a laminate isdescribed, for example, in WO 2007/068444.

The term nonwoven fabric is used within the meaning of standard DIN ENISO 9092:2010. In particular, film and paper structures, in particularfilter paper, are there not regarded as being nonwoven fabric.“Nonwoven” is a structure made of fibers and/or continuous filaments orshort fiber yarns shaped into a surface structure by some method (exceptinterlacing of yarns such as woven fabric, knitwear, lace, or tuftedfabric) but not bonded by some method. With a bonding process, anonwoven turns into nonwoven fabric. The nonwoven or nonwoven fabric canbe dry laid, wet laid or extruded.

The floor vacuum cleaner can comprise a blow-out filter, in particularhaving a filter area of at least 800 cm². The blow-out filter can inparticular be configured to be pleated or folded. This makes it possibleto obtain a large surface area at a smaller base area. The blow-outfilter can be provided in a holder, as described, for example, inEuropean patent application No. 14179375.2. Such blow-out filters allowthe use of vacuum cleaner filter bags with low separation efficiency,for example, of single-layer vacuum cleaner filter bags. For example, abag can be used as a vacuum cleaner filter bag with low separationefficiency in which the filter material of the bag wall consists of aspunbond with a surface weight of 15 g/m2 to 100 g/m2. The vacuumcleaner filter bag can therefore be formed in particular having a singlelayer. For example, a bag can alternatively be used in which the filtermaterial of the bag wall consists of a laminate made of a spunbond, ameltblown and a further spunbond (SMS).

Alternatively, the floor vacuum cleaner can be a bagless vacuum cleaner,in particular with a blow-out filter as described above having a filterarea of at least 800 cm2. A bagless vacuum cleaner is a vacuum cleanerin which the suctioned dust is separated and collected without a vacuumcleaner filter bag. In this case, the dust collector unit can comprisean impact separator or a centrifugal separator or a cyclone separator,respectively.

In the previously-described floor vacuum cleaners, the motor fan unitcan be arranged on and/or above the floor nozzle, in particular directlyon top of and/or above the floor nozzle. This leads to advantageoussuction performance. Moreover, a compact structure of the unit composedof the floor nozzle and the motorized fan unit can be obtained. Forexample, the motorized fan unit can be arranged such that air suctionedthrough the floor nozzle enters the motorized fan unit directly from thefloor nozzle.

The motorized fan unit can be fluidically connected to the floor nozzlevia a tube member. In this case, the motorized fan unit is no longerarranged directly on and/or above the floor nozzle. In particular, thetube member can have a length of 10 mm to 1200 mm, preferably 10 mm to300 mm.

The motorized fan unit can comprise an (in particular single stage)radial fan. In a radial fan, the air is suctioned parallel or axiallyrelative to the drive axis of the fan wheel and deflected by therotation of the fan wheel, in particular by approximately 90° , andblown out radially.

The above-described floor vacuum cleaners can comprise a secondmotorized fan unit. The second motorized fan unit can be a dirty airmotor or a clean air motor (as described above).

In particular in the case of a dirty air motor, the second motorized fanunit can be arranged, for example, between the floor nozzle and thesuction tube such that an air stream suctioned through the floor nozzleflows through the second motorized fan unit into the suction tube. Thesecond motorized fan unit can in particular be arranged fluidicallydirectly downstream of the first motorized fan unit.

Alternatively, the motorized fan unit can be arranged between thesuction hose and the dust collector unit such that an air streamsuctioned through the suction hose flows through the second motorizedfan unit into the dust collector unit. The dust collector unit cancomprise a housing, where the second motorized fan unit is arranged onthe housing.

In particular in the case of a clean air motor, the second motorized fanunit can be arranged fluidically downstream of the dust collector unit.

The first and second motorized fan units can have the same or differentelectrical power input. The electrical input power of each motorized fanunit can in particular be between 50 and 400 W. The sum of theelectrical input power of both motorized fan units can in particular beat most 900 W.

It has shown that the use of a second assist motorized fan unitpositively influences the clogging behavior of a vacuum cleaner filterbag and a high volumetric flow can be obtained. This results in gooddust collection by the floor nozzle

In principle, the floor nozzle can be an active or a passive floornozzle. An active floor nozzle has a brush roller (sometimes alsoreferred to as a beating and/or rotation brush) in the suction opening.The brush roller can be driven electro-motorically A passive floornozzle has no brush roller.

In the floor vacuum cleaners described, very good efficiency and suctionperformance can on account of the overall design also be obtained with apassive floor nozzle, i.e. without a brush roller. When passive floornozzles are used, the design and therefore also the weight of the floornozzle is simplified, which simplifies handling.

Further features are described with reference to the figures, where

FIG. 1 shows a first embodiment of a floor vacuum cleaner;

FIG. 2 shows a second embodiment of a floor vacuum cleaner.

FIG. 1 illustrates an example of a floor vacuum cleaner 1. Floor vacuumcleaner 1 shown comprises a dust collector unit 2 which is mounted onrollers 3 and can therefore be moved in a rolling manner. Connected todust collector unit 2 is a suction hose 4 which in turn is connected toa suction tube 5. Suction hose 4 comprises flexible material which is inparticular deformable during operation. The material used is, forexample, plastic material. The hose can be connected to dust collectorunit 2 detachable in a nondestructive manner or detachable not in anondestructive manner.

Suction tube 5 is formed to be rigid so that it can not be deformed by auser during the intended use. The material of suction tube 5 can beplastic material or metal. The connection between the suction tube andthe suction hose can formed to be detachable in a nondestructive manneror detachable not in a nondestructive manner. A handle 6 is alsoattached to suction tube 5.

Floor vacuum cleaner 1 further comprises a floor nozzle 7 which is via atube member 8 connected to a motorized fan unit 9. A tilting joint, arotary joint or a rotary/tilting joint can respectively be provided atthe connection point between tube member 8 and motorized fan unit 9and/or between floor nozzle 7 and tube member 8 and/or motorized fanunit 9 and suction tube 5. Such a joint can also be realized, forexample, by way of a bellows. In the arrangement shown, a continuousfluidic connection to dust collector unit 2 is therefore established byfloor nozzle 7, tube member 8, motorized fan unit 9, suction tube 5 andsuction hose 4. Motorized fan unit 9 is there arranged between floornozzle 4 and suction tube 5 so that dirty air suctioned through thefloor nozzle flows through motorized fan unit 9 into suction tube 5.

Motorized fan unit 9 is therefore a dirty air motor. This is inparticular a motorized fan unit comprising a single-stage radial fan.The motorized fan unit has a fan wheel the axis of which is duringintended use parallel to the surface to be suctioned and perpendicularto the intended sliding direction of the floor nozzle.

The fan diameter can be 60 mm to 160 mm. A motorized fan unit, forexample, from the company AMETEK, Inc. can be used, which is also usedin Soniclean Upright vacuum cleaners (e.g. SONICLEAN VT PLUS).

The motorized fan unit of the SONICLEAN VT PLUS was characterizedaccording to DIN EN 60312-1:2014-01 as explained above. The motorizedfan unit was measured without the vacuum cleaner housing. For possiblynecessary adapters for connection to the measuring chamber, thedescriptions in section 7.3.7.1 apply. The table shows that highvolumetric flows are obtained at low rotational speeds and low inputpower.

AMETEK “dirty air” (fan wheel diameter 82 mm) with aperture 8 (40 mm)negative rotational pressure volumetric Input power voltage speed boxflow [W] [V] [RPM] [kPa] [l/s] 200 77 15,700 0.98 30.2 250 87 17,2001.17 32.9 300 95 18,400 1.34 35.2 350 103 19,500 1.52 37.5 400 11120,600 1.68 39.4 450 117 21,400 1.82 41.0

Air is during operation sucked in by motorized fan unit 9. The airstream there enters vacuum cleaner 1 through an opening of floor nozzle7, is passed through tube member 8 and motorized fan unit 9 andsubsequently flows into suction tube 5. Due to the arrangement ofmotorized fan unit 9 near floor nozzle 7 and—in the direction of airflow—upstream of suction tube 5 and suction hose 4, an overpressureprevails in suction tube 5 and suction hose 4.

In conventional floor vacuum cleaners, the motorized fan unit isarranged in the dust collector unit, resulting in the entire systemcomprising the floor nozzle, the suction tube and the suction hose aswell as the dust collector unit itself being subjected to negativepressure. In order to prevent deformation of the suction tube, thesuction hose and/or the dust collector arrangement due to the negativepressure, these elements must typically be reinforced. In theconfiguration illustrated in FIG. 1, this is not required or only to asmall degree because of the overpressure in suction tube 5, suction hose4, and dust collector unit 2.

The example shown in FIG. 1 is a bag vacuum cleaner. This means that,arranged in dust collector unit 2 is a vacuum cleaner filter bag 11 inwhich the suctioned dirt and dust is separated. This vacuum cleanerfilter bag can be, in particular, a flat bag, the bag walls of whichcomprise one or more layers of nonwoven and/or nonwoven fabric. Thevacuum cleaner filter bag is embodied as a disposable bag.

When using in particular single-layer vacuum cleaner filter bags inwhich the bag wall is composed, for example, of exactly one nonwovenfabric layer in the form of a spunbond, the use of a blow-out filter isadvantageous. The dust filter can be used to filter fine dust which hasnot been separated in the vacuum cleaner filter bag. Such a blow-outfilter can have an area of at least 800 cm 2. It can in particular beformed to be pleated or folded in order to have a large surface area ata smaller base area (than the surface area).

Since no motorized fan unit needs to be arranged in dust collector unit2, the dust collector unit can be embodied to be more compact andlighter than in conventional floor vacuum cleaners. Suction hose 4typically has a diameter in a range of 25 mm to 50 mm and a length in arange of 1000 mm to 2500 mm. Suction tube 5 typically has a diameter ina range of 25 mm to 50 mm and a length in a range of 600 mm to 1200 mm.

Suction tube 5 is formed to be rigid and suction hose 4 is formed to beflexible.

FIG. 2 shows an alternative embodiment of a floor vacuum cleaner 1 inwhich the same elements are provided with the same reference symbols as,in FIG. 1. In the example shown in FIG. 2, motorized fan unit 9 isarranged directly on and above floor nozzle 7. In this case, the axis ofthe fan wheel of motorized fan unit 9 is during the intended usearranged vertical, i.e., perpendicular to the surface to be suctioned.The suctioned air enters floor nozzle 7 through a suction opening andthrough a suction mouth provided in floor nozzle 7 directly intomotorized fan unit 9 from where it flows into suction tube 5.Accordingly, an overpressure is present in the suction tube (and also inthe suction hose fluidically downstream thereof).

The example shown in FIG. 2 is a bagless vacuum cleaner. Dust collectorunit 2 comprises a centrifugal separator or cyclone separator 10,respectively, in which the suctioned dirt and dust particles areseparated by centrifugal force. It can be a single cyclone or amulti-cyclone vacuum cleaner. Alternatively, the bagless floor vacuumcleaner can also be designed as an impact separator.

Dust collector unit 2 comprises a blow-out filter with which fine dustis filtered which has not been separated in the centrifugal separator.This blow-out filter can have an area of at least 800 cm². It can inparticular be formed to be pleated or folded in order to have a largesurface area at a smaller base area. The blow-out filter can there beprovided in a holder, as described in European patent application No.14179375.2.

It is understood that the features shown in FIGS. 1 and 2 can also becombined with one another in other ways. The arrangement of themotorized fan unit according to FIG. 1 can in particular also be used inthe example according to FIG. 2, and the arrangement of the motorizedfan unit in FIG. 2 in the example according to FIG. 1.

In addition to the one motorized fan unit employed in the examplesshown, the floor vacuum cleaner can also comprise a second, assistmotorized fan unit. It has been found that the use of two motorized fanunits during operation of the floor vacuum cleaner can result in a lowersuction power loss as compared to the use of a single motorized fanunit, even if the sum of the electric input power of the two motorizedfan units is equal to the electric input power of the one motorized fanunit.

The second motorized fan unit can be designed as a dirty air motor andcan be arranged fluidically upstream of the dust collector unit so thatthe dirty air also flows through the second motorized fan unit. The twomotorized fan units can have identical or different electrical powerinputs.

Alternatively, the second motorized fan unit can be designed as a cleanair motor and can be arranged fluidically downstream of the dustcollector unit. For example, a motorized fan unit from the company Domelwith the model name 467.3.601-4 (to be acquired from Domel, doo Otoki21, 4228 2 elezniki, Slovenija) can be used.

In either embodiment, it is not necessary that a brush roller (forexample a beating brush and/or a rotating brush) be provided on or infloor nozzle 7.

1. A floor vacuum cleaner comprising a dust collector unit mounted on rollers and/or runners, a suction hose, a suction tube, floor nozzle, wherein said floor nozzle is fluidically connected to said dust collector arrangement via said suction tube and said suction hose, and a motorized fan unit for suctioning an air stream through said floor nozzle, wherein said motorized fan unit is arranged between said floor nozzle and said suction tube such that an air stream suctioned in through said floor nozzle flows through said motorized fan unit and into said suction tube.
 2. The floor vacuum cleaner according to claim 1, wherein said motorized fan unit is configured such that, with an aperture of 8, the motorized fan unit has a volumetric flow of more than 30 l/s at an electrical input power of less than 900 W according to DIN EN 60312-1, with an aperture of 8, the motorized fan unit has a volumetric flow of more than 25 l/s at an electrical input power of less than 600 W according to DIN EN 60312-1, and/or with an aperture of 8, the motorized fan unit has a volumetric flow of more than 15 l/s at an electrical input power of less than 300 W according to DIN EN 60312-1.
 3. The floor vacuum cleaner according to claim 1, wherein said floor nozzle comprises a base plate with a base surface which during operation of said floor vacuum cleaner faces a surface to be suctioned, where said base plate has at least one air flow channel parallel to said base surface and with an opening provided laterally in said base plate.
 4. The floor vacuum cleaner according to claim 1, wherein said suction tube has a diameter in a range from 25 mm to 50 mm and/or a length in a range from 600 mm to 1200 mm.
 5. The floor vacuum cleaner according to claim 1, wherein said suction hose has a diameter in a range from 25 mm to 50 mm and/or a length in a range from 1000 mm to 2500 mm.
 6. The floor vacuum cleaner according to claim 1, wherein said floor nozzle is configured or said motorized fan unit is arranged such that no contact between a fan wheel and a test probe according to IEC/EN 60335 is possible through said floor nozzle.
 7. The floor vacuum cleaner according to claim 1, comprising a blow-out filter.
 8. The floor vacuum cleaner according to claim 1, wherein said floor vacuum cleaner is a bag vacuum cleaner.
 9. The floor vacuum cleaner according to claim 8, comprising a vacuum cleaner filter bag, where said vacuum cleaner filter bag is a flat bag or a disposable bag.
 10. The floor vacuum cleaner according to claim 9, wherein the bag wall of said vacuum cleaner filter bag comprises one or more layers of a nonwoven and/or one or more layers of nonwoven fabric.
 11. The floor vacuum cleaner according to claim 1, wherein said floor vacuum cleaner is a bagless vacuum cleaner.
 12. The floor vacuum cleaner according to claim 11, wherein said dust collector unit comprises an impact separator or a centrifugal separator.
 13. The floor vacuum cleaner according to claim 1, wherein said motorized fan unit is arranged on and/or above said floor nozzle.
 14. The floor vacuum cleaner according to claim 1, wherein said motorized fan unit is fluidically connected to said floor nozzle via a tube member.
 15. The floor vacuum cleaner according to claim 1, wherein said motorized fan unit comprises radial fan.
 16. The floor vacuum cleaner according claim 1, comprising a second motorized fan unit.
 17. The floor vacuum cleaner according to claim 1, wherein said floor nozzle comprises no rotating brush.
 18. The floor vacuum cleaner according to claim 7, wherein the blow out filter has a filter area of at least 800 cm².
 19. The floor vacuum cleaner according to claim 8, wherein the bag vacuum cleaner has a filter area of at least 800 cm².
 20. The floor vacuum cleaner according to claim 11, wherein the bagless vacuum cleaner comprises a blow-out filter having a filter area of at least 800 cm². 